Add executable to Options interface to get the name of the executable used to execute the script.

corelib/src/implementation/options.dart

-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 class RuntimeOptions implements Options {
   List<String> get arguments() {
     if (_arguments === null) {
       // On first access make a copy of the native arguments.
       _arguments = _nativeArguments.getRange(0, _nativeArguments.length);
     }
     return _arguments;
   }
 
+  String get executable() {
+    return _nativeExecutable;
+  }
+
   String get script() {
     return _nativeScript;
   }
 
   List<String> _arguments = null;
 
   // This arguments singleton is written to by the embedder if applicable.
   static List<String> _nativeArguments = const [];
 
+  // This executable singleton is written to by the embedder if applicable.
+  static String _nativeExecutable = null;

[Ivan Posva, 2012/05/07 17:40:36]

null or ""? See _nativeArguments above. When accessed they will not give you a
null access.

[Mads Ager (google), 2012/05/08 06:39:04]

Done.

+
   // This script singleton is written to by the embedder if applicable.
   static String _nativeScript = null;

[Ivan Posva, 2012/05/07 17:40:36]

ditto.

[Mads Ager (google), 2012/05/08 06:39:04]

Done.

 }